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Chapter 9. Customizing the Home page

When using the app-config, you can do the following:

  • Customize and extend the default Home page layout with additional cards that appear based on the plugins you have installed and enabled.
  • Change quick access links.

  • Add, reorganize, and remove the following available cards:

    • Search bar
    • Quick access
    • Headline
    • Markdown
    • Placeholder
    • Catalog starred entities
    • Featured docs

9.1. Customizing the Home page cards

Administrators can change the fixed height of cards that are in a 12-column grid.

The default Home page is as shown in the following app-config file configuration: 

dynamicPlugins:
  frontend:
    red-hat-developer-hub.backstage-plugin-dynamic-home-page:
      dynamicRoutes:
        - path: /
          importName: DynamicHomePage
      mountPoints:
        - mountPoint: home.page/cards
          importName: SearchBar
          config:
            layouts:
              xl: { w: 10, h: 1, x: 1 }
              lg: { w: 10, h: 1, x: 1 }
              md: { w: 10, h: 1, x: 1 }
              sm: { w: 10, h: 1, x: 1 }
              xs: { w: 12, h: 1 }
              xxs: { w: 12, h: 1 }
        - mountPoint: home.page/cards
          importName: QuickAccessCard
          config:
            layouts:
              xl: { w: 7, h: 8 }
              lg: { w: 7, h: 8 }
              md: { w: 7, h: 8 }
              sm: { w: 12, h: 8 }
              xs: { w: 12, h: 8 }
              xxs: { w: 12, h: 8 }
        - mountPoint: home.page/cards
          importName: CatalogStarredEntitiesCard
          config:
            layouts:
              xl: { w: 5, h: 4, x: 7 }
              lg: { w: 5, h: 4, x: 7 }
              md: { w: 5, h: 4, x: 7 }
              sm: { w: 12, h: 4 }
              xs: { w: 12, h: 4 }
              xxs: { w: 12, h: 4 }

Prerequisites

  • You have administrative access and can modify the app-config.yaml file for dynamic plugin configurations.

Procedure

  • Configure different cards for your Home page in Red Hat Developer Hub as follows:

    Search
    dynamicPlugins:
  frontend:
    red-hat-developer-hub.backstage-plugin-dynamic-home-page:
      mountPoints:
        - mountPoint: home.page/cards
          importName: SearchBar
          config:
            layouts:
              xl: { w: 10, h: 1, x: 1 }
              lg: { w: 10, h: 1, x: 1 }
              md: { w: 10, h: 1, x: 1 }
              sm: { w: 10, h: 1, x: 1 }
              xs: { w: 12, h: 1 }
              xxs: { w: 12, h: 1 }
    Table 9.1. Available props
    PropDefaultDescription

    path

    /search

    Override the linked search path if needed

    queryParam

    query

    Override the search query parameter name if needed

    Quick access
    dynamicPlugins:
  frontend:
    red-hat-developer-hub.backstage-plugin-dynamic-home-page:
      mountPoints:
        - mountPoint: home.page/cards
          importName: QuickAccessCard
          config:
            layouts:
              xl: { h: 8 }
              lg: { h: 8 }
              md: { h: 8 }
              sm: { h: 8 }
              xs: { h: 8 }
              xxs: { h: 8 }
    Table 9.2. Available props
    PropDefaultDescription

    title

    Quick Access

    Override the linked search path if needed

    path

    none

    Override the search query parameter name if needed

    Headline
    dynamicPlugins:
  frontend:
    red-hat-developer-hub.backstage-plugin-dynamic-home-page:
      mountPoints:
        - mountPoint: home.page/cards
          importName: Headline
          config:
            layouts:
              xl: { h: 1 }
              lg: { h: 1 }
              md: { h: 1 }
              sm: { h: 1 }
              xs: { h: 1 }
              xxs: { h: 1 }
            props:
              title: Important info
    Table 9.3. Available props
    PropDefaultDescription

    title

    none

    Title

    Markdown
    dynamicPlugins:
  frontend:
    red-hat-developer-hub.backstage-plugin-dynamic-home-page:
      mountPoints:
        - mountPoint: home.page/cards
          importName: MarkdownCard
          config:
            layouts:
              xl: { w: 6, h: 4 }
              lg: { w: 6, h: 4 }
              md: { w: 6, h: 4 }
              sm: { w: 6, h: 4 }
              xs: { w: 6, h: 4 }
              xxs: { w: 6, h: 4 }
            props:
              title: Company links
              content: |
                ### RHDH
                * [Website](https://developers.redhat.com/rhdh/overview)
                * [Documentation](https://docs.redhat.com/en/documentation/red_hat_developer_hub/)
                * [Janus Plugins](https://github.com/janus-idp/backstage-plugins)
                * [Backstage Community Plugins](https://github.com/backstage/community-plugins)
                * [RHDH Plugins](https://github.com/redhat-developer/rhdh-plugins)
                * [RHDH Showcase](https://github.com/redhat-developer/rhdh)
        - mountPoint: home.page/cards
          importName: Markdown
          config:
            layouts:
              xl: { w: 6, h: 4, x: 6 }
              lg: { w: 6, h: 4, x: 6 }
              md: { w: 6, h: 4, x: 6 }
              sm: { w: 6, h: 4, x: 6 }
              xs: { w: 6, h: 4, x: 6 }
              xxs: { w: 6, h: 4, x: 6 }
            props:
              title: Important company links
              content: |
                ### RHDH
                * [Website](https://developers.redhat.com/rhdh/overview)
                * [Documentation](https://docs.redhat.com/en/documentation/red_hat_developer_hub/)
                * [Documentation](https://docs.redhat.com/en/documentation/red_hat_developer_hub/)
                * [Janus Plugins](https://github.com/janus-idp/backstage-plugins)
                * [Backstage Community Plugins](https://github.com/backstage/community-plugins)
                * [RHDH Plugins](https://github.com/redhat-developer/rhdh-plugins)
                * [RHDH Showcase](https://github.com/redhat-developer/rhdh)
    Placeholder
    dynamicPlugins:
  frontend:
    red-hat-developer-hub.backstage-plugin-dynamic-home-page:
      mountPoints:
        - mountPoint: home.page/cards
          importName: Placeholder
          config:
            layouts:
              xl: { w: 1, h: 1 }
              lg: { w: 1, h: 1 }
              md: { w: 1, h: 1 }
              sm: { w: 1, h: 1 }
              xs: { w: 1, h: 1 }
              xxs: { w: 1, h: 1 }
            props:
              showBorder: true
              debugContent: '1'
    Catalog starred entities
    dynamicPlugins:
  frontend:
    red-hat-developer-hub.backstage-plugin-dynamic-home-page:
      mountPoints:
        - mountPoint: home.page/cards
          importName: CatalogStarredEntitiesCard
    Featured docs
    dynamicPlugins:
  frontend:
    red-hat-developer-hub.backstage-plugin-dynamic-home-page:
      mountPoints:
        - mountPoint: home.page/cards
          importName: FeaturedDocsCard

9.2. Defining the layout of the Red Hat Developer Hub Home page

The Home page uses a 12-column grid to position your cards. You can use the optimal parameters to define the layout of your Developer Hub Home page.

Prerequisites

  • Include the following optimal parameters in each of your breakpoints:

    • width (w)
    • height (h)
    • position (x and y)

Procedure

  1. Configure the layout of the cards on the home page by entering one of the following configurations in your Developer Hub app-config.yaml file.

    • Use the full space on smaller windows and half of the space on larger windows as shown in the following example: 
dynamicPlugins:
  frontend:
    red-hat-developer-hub.backstage-plugin-dynamic-home-page:
      mountPoints:
        - mountPoint: home.page/cards
          importName: Placeholder
          config:
            layouts:
              xl: { w: 6, h: 2 }
              lg: { w: 6, h: 2 }
              md: { w: 6, h: 2 }
              sm: { w: 12, h: 2 }
              xs: { w: 12, h: 2 }
              xxs: { w: 12, h: 2 }
            props:
              showBorder: true
              debugContent: a placeholder
  • Show the cards side by side by defining the x parameter as shown in the following example: 
dynamicPlugins:
  frontend:
    red-hat-developer-hub.backstage-plugin-dynamic-home-page:
      mountPoints:
        - mountPoint: home.page/cards
          importName: Placeholder
          config:
            layouts:
              xl: { w: 6, h: 2 }
              lg: { w: 6, h: 2 }
              md: { w: 6, h: 2 }
              sm: { w: 12, h: 2 }
              xs: { w: 12, h: 2 }
              xxs: { w: 12, h: 2 }
            props:
              showBorder: true
              debugContent: left
        - mountPoint: home.page/cards
          importName: Placeholder
          config:
            layouts:
              xl: { w: 6, h: 2, x: 6 }
              lg: { w: 6, h: 2, x: 6 }
              md: { w: 6, h: 2, x: 6 }
              sm: { w: 12, h: 2, x: 0 }
              xs: { w: 12, h: 2, x: 0 }
              xxs: { w: 12, h: 2, x: 0 }
            props:
              showBorder: true
              debugContent: right

However, you can see a second card below this card by default.

  • Show the cards in three columns by defining the x parameter as shown in the following example: 
dynamicPlugins:
  frontend:
    red-hat-developer-hub.backstage-plugin-dynamic-home-page:
      mountPoints:
        - mountPoint: home.page/cards
          importName: Placeholder
          config:
            layouts:
              xl: { w: 4, h: 2 }
              lg: { w: 4, h: 2 }
              md: { w: 4, h: 2 }
              sm: { w: 6, h: 2 }
              xs: { w: 12, h: 2 }
              xxs: { w: 12, h: 2 }
            props:
              showBorder: true
              debugContent: left
        - mountPoint: home.page/cards
          importName: Placeholder
          config:
            layouts:
              xl: { w: 4, h: 2, x: 4 }
              lg: { w: 4, h: 2, x: 4 }
              md: { w: 4, h: 2, x: 4 }
              sm: { w: 6, h: 2, x: 6 }
              xs: { w: 12, h: 2 }
              xxs: { w: 12, h: 2 }
            props:
              showBorder: true
              debugContent: center
        - mountPoint: home.page/cards
          importName: Placeholder
          config:
            layouts:
              xl: { w: 4, h: 2, x: 8 }
              lg: { w: 4, h: 2, x: 8 }
              md: { w: 4, h: 2, x: 8 }
              sm: { w: 6, h: 2 }
              xs: { w: 12, h: 2 }
              xxs: { w: 12, h: 2 }
            props:
              showBorder: true
              debugContent: right
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